Conveyor Roller For Rebar Rolling Mill Cooling Bed

These rollers keep stable roller profile during long‑term conveying of hot deformed steel rebars, avoiding bar surface scratches and indentations. Site operation data shows laser‑cladded cooling‑bed rollers run stably under heavy tonnage throughput, presenting only minor surface wear, without coating spalling or cracking.

High‑energy laser beam serves as heat source, alloy powder is synchronously fed into molten pool. Powder and roller substrate melt and solidify rapidly to achieve metallurgical bonding. Dilution rate is precisely controlled within 3%‑8% (below 5% for premium process), preserving full alloy performance of cladding layer. WC tungsten‑carbide composite cladding is available for severe abrasive‑wear conditions.

✅ Solid Metallurgical Bonding

The cladding layer forms true metallurgical combination with roller base metal, reaching substrate‑level bonding strength. Resists peeling and cracking under repeated hot‑rebar impact and thermal cycling, far more reliable than thermal‑spray coatings. Effectively cuts unplanned downtime for rebar production lines.

✅ Small Heat‑Affected Zone & Low Distortion

Concentrated laser energy brings small molten pool and rapid cooling speed. Roller overall deformation is minimal; base‑material microstructure remains almost unchanged. Less post‑cladding machining allowance, perfectly fits precision requirements for cooling‑bed input rollers.

✅ High Hardness & Excellent Wear Resistance

Surface hardness reaches HRC45‑55. For WC‑reinforced cladding, service life is 2‑5 times of conventional hard‑facing rollers and 5‑10 times of ordinary heat‑treated rollers. Outstanding anti‑scouring performance against oxide scale, hot particles and hot rebar friction, maintains stable roller groove profile for long‑period production.

✅ Good High‑Temperature & Thermal‑Fatigue Resistance

Nickel‑base alloy grades such as Ni625 / Inconel625 support continuous working temperature 500‑800℃, resisting high‑temperature oxidation and alternating hot‑cold thermal shock in cooling‑bed entry area.

✅ Local Strengthening & Roller Remanufacturing

Cladding is applied only on wear‑prone working surfaces or U‑groove zones instead of full‑body cladding, saving expensive alloy raw materials and shortening lead‑time. Worn, corroded or dimension‑shifted old rollers can be restored to original drawing dimension and performance. ‑ Repair cost: 30%‑70% lower than brand‑new rollers ‑ Delivery cycle: shortened more than 50% ‑ Multiple repeated remanufacturing is supported.

✅ Automated Manufacturing & Eco‑Friendly

Produced by multi‑axis robotic laser cladding equipment with automatic powder feeding and intelligent path planning. Coating quality keeps high consistency for batch orders. Compared with traditional manual hard‑facing welding, it has less smoke, spatter and lower power consumption, complying with green‑manufacturing standards.

Specially designed for rebar / TMT bar rolling mill cooling‑bed input roller tables. Applicable for hot‑rolling production lines of deformed steel rebar, round bars and alloy bars.

Laser‑cladded conveyor rollers for rebar rolling‑mill cooling beds solve common pain points of original rollers: fast wear, thermal‑fatigue crack, coating spalling and rebar surface damage. Stable conveying performance reduces frequent roller replacement and maintenance shutdown, helping steel plants lower total operating cost.

Custom cladding‑material selection, special dimension adaptation and remanufacturing quotation for used rollers are available. Please contact our technical team.